56116817 has 4 divisors (see below), whose sum is σ = 56613540. Its totient is φ = 55620096.

The previous prime is 56116811. The next prime is 56116859. The reversal of 56116817 is 71861165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12609601 + 43507216 = 3551^2 + 6596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56116817 is a prime.

It is a super-2 number, since 2×56116817² = 6298194300422978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56116811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248192 + ... + 248417.

It is an arithmetic number, because the mean of its divisors is an integer number (14153385).

Almost surely, 2^56116817 is an apocalyptic number.

It is an amenable number.

56116817 is a deficient number, since it is larger than the sum of its proper divisors (496723).

56116817 is a wasteful number, since it uses less digits than its factorization.

56116817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496722.

The product of its digits is 10080, while the sum is 35.

The square root of 56116817 is about 7491.1158714840. The cubic root of 56116817 is about 382.8520790298.

The spelling of 56116817 in words is "fifty-six million, one hundred sixteen thousand, eight hundred seventeen".